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Search for D-0-(0) mixing
Ammar, Raymond G. Bean, Alice Besson, David Zeke Davis, Robin E. P. Kravchenko, I. Kwak, Nowhan Zhao, X.
Ammar, Raymond G.
Bean, Alice
Besson, David Zeke
Davis, Robin E. P.
Kravchenko, I.
Kwak, Nowhan
Zhao, X.
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Abstract
We have studied the "wrong-sign" process D-0 --> K+ pi(-) to search for D-0-(D) over bar(0) mixing. The data come from 9.0 fb(-1) of e(+) e(-) collisions at root s approximate to 10 GeV recorded with the CLEO II.V detector. We measure the relative rate of the wrong-sign process D-0 --> K+ pi(-) to the Cabibbo-favored process (D) over bar(0) --> K+ pi(-) to be R = (0.3321(-0.065)(+0.063) +/- 0.040)%. We study D-0 --> K+ pi(-) as a function of decay time to distinguish direct doubly Cabibbo-suppressed decay from D-0-(D) over bar(0) mixing. The amplitudes that describe D-0-(D) over bar(0) mixing, x ' and y ', are consistent with zero. At the 95% C.L. and without assumptions concerning charge-parity (CP) violating parameters, we find (1/2)x(/2) < 0.041% and -5.8% < y ' < 1.0%.
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2000-05
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AMERICAN PHYSICAL SOC
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Godang, R, Kinoshita, K, et al. Search for D-0-(0) mixing. PHYSICAL REVIEW LETTERS. May 2000. 84(22) : 5038-5042